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Finding the Fourth Proportional to 447,630.40, 672,223.20 and 237,678.40

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Solution

The fourth proportional to 447,630.40, 672,223.20 and 237,678.40 is: 356,930.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,630.40 : 672,223.20 = 237,678.40 : x
  2. Step 2: Convert to fraction form
    447,630.40/672,223.20 = 237,678.40/x
  3. Step 3: Cross multiply
    447,630.40x = 672,223.20 × 237,678.40
  4. Step 4: Simplify right side
    447,630.40x = 159,772,934,618.88
  5. Step 5: Solve for x
    x = 159,772,934,618.88/447,630.40
  6. Step 6: Final answer
    x = 356,930.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.